ISO 2749:1973
Urea for industrial use; Measurement of the pH of a solution of urea of conventional concentration (100 g/l); Potentiometric method

Standard No.

ISO 2749:1973

Release Date

1973

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 2749:1973

Scope

Describes the measurement of a solution of a test sample by means of a pH meter fitted with one glass electrode and one calomel electrode. The pH meter has a sensitivity of 0.05 pH units. The calibration of the pH meter is carried out at (20 0.5) 0C by means of buffer solutions. The method has also been approved by the IUPAC.

ISO 2749:1973 history

• 1973 ISO 2749:1973 Urea for industrial use; Measurement of the pH of a solution of urea of conventional concentration (100 g/l); Potentiometric method